R&P means ring and pinion
if u reduce ur t-case gear to 6.5 it is a 20.2% 2 hi reduction. this means ÂÂ
ring gear size X 20.2% = total + R&P size = running gear size/reduced R&P.
most t-cases don't reduce 2 hi and 4 hi but a sammi case does. say if u have a
3.73 X 20.2% =2.8104058 + 3.73 = 6.5404058.
the biggest R&P offered for a tracker is 5.89. with the 20.2% reduction in 2 hi opperation it is like running a 6.54 R&P         ÂÂ
Unlike what's currently available in low range gear kits for the Samurai, you won't find any junky welded gears in this kit or the need to heavily alter the factory transfer case.  Our kit contains 4 completely new gears machined from billet material! Manufactured in the USA to exceed factory tolerances from quality SAE 8620 alloy. Now, you can re-gear your Samurai drive train completely through the transfer case.
A TRUE 20.2% Hi-Range reduction will correct highway gearing for 32� -33" tall tires. A whopping 187% reduction in low range offers a range that is over twice as low as our current 4.16:1 kit - It’s almost too low for some instances. Either way, this is the lowest ratio gear reduction kit for your Samurai. We don't leave anything out - It's a complete kit sold with Input Shaft, High Output Gear, Low Output Gear, Counter Gear, Counter Shaft & bearings, thrust washers, gaskets and detailed instruction booklet. Installs like factory parts - NO GRINDING or CUTTING is required to install! It even comes with oil! The mandatory first step towards building an awesome off road Samurai